CO2 Drop Checker Kit - CO2 Concentration Monitoring Set
A glass drop checker with the 15 ml indicator solution and a suction cup — everything to start reading the CO2 level of your aquarium, no mixing needed. 3 cm across, 5.5 cm tall.
Same-day dispatch on orders before 2 PM CET
Lifetime free technical support
Up to 10-year warranty
Free delivery on orders over €200
CO2 Drop Checker Kit - CO2 Concentration Monitoring Set
Real photos and videos from real customers
Tap a photo to see the gear in it — every tile is the customer's own post, credited and linked.
@earl_scapes
Within 3 days of using @2hraquarist apt3 plants are looking much better already, so surprised with the turn around.
Tank @superfish.aquadistri
Co2 @co2art
Ferts @2hraquarist
Light @aquaoneuk
Filter @oase_global
#aquarium #plantedtanks #aquascaping #tropicalfish #naturea...Within 3 days of using @2hraquarist apt3 plants are looking much better already, so surprised with the turn around.
Tank @superfish.aquadistri
Co2 @co2art
Ferts @2hraquarist
Light @aquaoneuk
Filter @oase_global
#aquarium #plantedtanks #aquascaping #tropicalfish #natureathome
4 September 2026
In this photo
@mattmonkey23
🇷🇪 Presque deux mois séparent ces deux photos…
Au début, le hardscape est encore très présent, les plantes commencent tout juste à s’installer et le paysage paraît presque nu.
Puis, petit à petit, la Monte Carlo s’est étendue, le vert s’est intensifié et l’ensemble a commenc...🇷🇪 Presque deux mois séparent ces deux photos…
Au début, le hardscape est encore très présent, les plantes commencent tout juste à s’installer et le paysage paraît presque nu.
Puis, petit à petit, la Monte Carlo s’est étendue, le vert s’est intensifié et l’ensemble a commencé à prendre vie. Les Manten Stone se retrouvent progressivement intégrées dans ce petit morceau de nature. Et je ne parle pas de la cryptocoryne 🤭 se rouge est magnifique avec le dégradé bleu de la screen Light ADA 🌱
C’est probablement l’une des choses que j’aime le plus dans l’aquascaping : accepter de laisser le temps faire son travail.
On plante, on entretient, on ajuste… puis on regarde simplement le paysage évoluer, semaine après semaine.
Et ce n’est que le début…
Vous préférez lequel des deux rendus ? 🤭😁💚🌱
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💧Filtration: Aqua Design Amano
🌱Plante: aquabon_reunion
🫧CO2: co2art
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#Aquascaping #aquariophilie #NatureAquarium #aquarium #iwagumi
31 August 2026
In this photo
@aquascaping.passion
CO2 de chez @co2art reste pour moi une référence dans le monde de l’aquascaping #aquascaping #aquarium #aqua #aquascape
27 August 2026
In this photo
@earl_scapes
Water Change Sunday
Tank @superfish.aquadistri
Co2 @co2art
Filter/ Substrate @oase_global
Light @aquaoneuk
Plants @tropicaaquariumplants
#tropicalfishkeeping #superfish #aquascaping #natureathome #freshwateraquarium
26 July 2026
In this photo
@earl_scapes
Day 39 🌿💚
First cut of stems and it now has life in there.
Back to my one of my favourites, Sunset honey gourami.
First filter clean to remove start up debris and gunk.
Tank @superfish.aquadistri
Co2 @co2art
Light @aquaoneuk
Substrate/filter @oase_global
#plantedta...Day 39 🌿💚
First cut of stems and it now has life in there.
Back to my one of my favourites, Sunset honey gourami.
First filter clean to remove start up debris and gunk.
Tank @superfish.aquadistri
Co2 @co2art
Light @aquaoneuk
Substrate/filter @oase_global
#plantedtank #aquascaping #nano #tropicalfishkeeping
14 July 2026
In this photo
@earl_scapes
Day 13 🌿
Invitro plants doing well on the whole. All stem shooting up and starting to take form.
The Monte carlo has melted back but think a mix of new plants as epiphites and not dosing enough ferts into water column.
Will add some moss and extra Monte carlo once balanced...Day 13 🌿
Invitro plants doing well on the whole. All stem shooting up and starting to take form.
The Monte carlo has melted back but think a mix of new plants as epiphites and not dosing enough ferts into water column.
Will add some moss and extra Monte carlo once balanced better I think.
Ferts/conditioners @apifishcare
Co2 @co2art
Filter @oase_global
Tank @superfish.aquadistri
Plants @tropicaaquariumplants @dennerleplants
Settling well on the whole though
#jungleaquascape #aquascaping #plantedtank
17 June 2026
In this photo
@aquascaping.passion#aquascaping #aquascaping #aquariophilie #aqua
30 April 2026
In this video
@divertigo42bonjour Aujourd'hui j'ai reçu le kit CO2 CO2 art. je vous fais une petite review de ce qu'il y a dans ce clip que j'ai commandé et je vous apporte des précisions techniques sur ce kit.#aquariophiliefrancais #planteaquarium #aquascaping #antialgues #aqurium
22 April 2026
In this video
@aquascaping.passionNon il est pas jaune !! C’est vert claire ! Sinon les poissons serais déjà panée depuis un moment ✌️#aquascaping #aquarium #aquariophilie #aqua
5 March 2026
In this video
@aquascaping.passion#aquascaping #aquarium #aquariophilie #aqua
13 February 2026
In this video
@aquascaping.passion
@terraquaman
New Pro-Elite Series V2 - The Most Advanced Aquarium Dual Stage CO2 Regulator 🫧
6 October 2025
In this photo
@aquascaping.passion#aquascaping #aquarium #aquariophilie #aqua
12 April 2025
In this video
@aquascaping.passion#aquascaping #aquarium #aquariophilie #aqua
15 March 2025
In this video
@skopje_aquascaping
Exciting news! 🌿🐠
I’m thrilled to partner with @Co2Art and showcase their top-of-the-line CO2 bottle regulator, a game-changer for maintaining a thriving planted aquarium!
Precision, reliability, and sleek design—this gear takes CO2 injection to the next level, ensuring my aq...Exciting news! 🌿🐠
I’m thrilled to partner with @Co2Art and showcase their top-of-the-line CO2 bottle regulator, a game-changer for maintaining a thriving planted aquarium!
Precision, reliability, and sleek design—this gear takes CO2 injection to the next level, ensuring my aquatic plants get just the right balance for healthy growth. 🌱💧
A big thank you to @Co2Art for supporting my passion for aquascaping. Stay tuned as I share the progress of my underwater jungle!
If you’re looking to step up your aquarium game, check out @Co2Art’s amazing gear. 💚
#CO2Art #PlantedAquarium #Aquascaping #CO2Regulator #AquariumGear #UnderwaterWorld #aquascapelife
17 December 2024
In this photo
@earl_scapes
Three Way Jungle
Things are looking up with this set up, diatoms and initial algae bloom have subsided and settled into a nice balance of growth.
More fish are needed, but they can wait while I enjoy the ever changing landscape in this.
Tank: @aquaoneuk aquasys300
Filter...Three Way Jungle
Things are looking up with this set up, diatoms and initial algae bloom have subsided and settled into a nice balance of growth.
More fish are needed, but they can wait while I enjoy the ever changing landscape in this.
Tank: @aquaoneuk aquasys300
Filter: @aquaoneuk Ocellaris 1400 21W
Lights: asta f120
Co2: @co2art_uk @co2art diffuser ProSE Series regulator
Ferts/conditioners: @seachem_laboratories @2hraquarist @ntlabs_official
Plants: @aquadip @gwynedd_aquatics
Food: @bluewaveaquaticsuk
#plantedaquarium #plantedglassboxes #green #jungleaquarium #natureaquarium #riverwood #aquaone #fedbybluewave #natureathome #roomdivider #anubias #fern #underwater
12 December 2024
In this photo
@aquascaping.passion
@bdpanaquafemale
Atualização 25 dias de vida!! 🌱🌿💚
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Projeto 100x50x40cm
@co2art
@aquaplanteoficial
@freshwater_af
@br.shark
@aquael_world
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#aquapaisagismo #aquario #desenvolvimento #aquarismobrasil #equipamentos #manutenção #aquapaisagismo #plants #green #aquascaping #equipm...Atualização 25 dias de vida!! 🌱🌿💚
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Projeto 100x50x40cm
@co2art
@aquaplanteoficial
@freshwater_af
@br.shark
@aquael_world
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#aquapaisagismo #aquario #desenvolvimento #aquarismobrasil #equipamentos #manutenção #aquapaisagismo #plants #green #aquascaping #equipments #aquael #heater #maintenance #quality #plants #aquaplanteoficial #aquaforestfreshwater #co2art #freshwatertank #sharkbr #sharkbraquarismo #co2artist #aquarismobrasil #acuarios #akwarium #acuapaisajismo #aquariumofinstagram #plantedtank #nature #aquariumlife #plantedaquarium
15 May 2021
In this photo
@jordanstirrat
🌱GIVEAWAY🌱
*GIVEAWAY CLOSED*
WINNER 👉 @_aquaillusion_
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How to enter?👇
▪️Tag 3 friends
▪️Follow @co2art ▪️Follow @aqua_planter
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Thank you to everyone for helping me reach 5k followers!!! Special thanks to @co2art for helping out with this giveaway 😁
This product was gifted...🌱GIVEAWAY🌱
*GIVEAWAY CLOSED*
WINNER 👉 @_aquaillusion_
-
How to enter?👇
▪️Tag 3 friends
▪️Follow @co2art ▪️Follow @aqua_planter
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Thank you to everyone for helping me reach 5k followers!!! Special thanks to @co2art for helping out with this giveaway 😁
This product was gifted by @co2art
6 April 2019
In this photo
@cornyscapes
@co2art -The Art of CO2 in Planted Aquarium ,Thanks so much for this complete set💥🥰#aquascape #aquarium #aqua #aquascaping #wood #grass #tetra #fish #fishtank #tropical #tropicalfish #iwagumi #water #fresh #aquariumsofinstagram #aquaria #beautiful #awesome #plants #aquariums ...@co2art -The Art of CO2 in Planted Aquarium ,Thanks so much for this complete set💥🥰#aquascape #aquarium #aqua #aquascaping #wood #grass #tetra #fish #fishtank #tropical #tropicalfish #iwagumi #water #fresh #aquariumsofinstagram #aquaria #beautiful #awesome #plants #aquariums #instafish #naturalaquariums #beautiful #aquariumsdaily #design #ADA #aquamarina #amano #co2art
3 February 2019
In this photo
Delivery, support, warranty and how to reach us — the short version. Every link opens the full page.
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Shipping
Free delivery on orders over €200. Orders placed before 2 PM CET usually ship the same day; regulators are assembled and tested first. Fully tracked FedEx delivery: 1–2 business days in Europe, 3–5 worldwide. Delivery details
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Support
Lifetime free technical support on every CO2Art product. Guides, manuals and a ticket form live in the support portal.
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FAQ
Cylinders and connections, bubble rates, drop checkers, what a dual-stage regulator does — the questions we hear most, answered. Read the FAQ
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Contact
Monday to Friday, 9:00–16:00 CET. We reply within one working day. Contact us
A glass drop checker with everything you need to start reading the CO2 level of your aquarium: the 15 ml indicator solution and a suction cup are in the box. No mixing or preparation.
Made of glass for reliability and designed for a professional's needs, the drop checker shows the amount of CO2 dissolved in the aquarium water through the colour of the pH reagent inside it — so you can tell whether the CO2 supply is right.
Size
- Outside diameter: 3 cm
- Height: 5.5 cm
Shipping and delivery
Free delivery on orders over €200; otherwise €9.99 in Europe and €14.99 for the rest of the world. Orders placed before 2 PM CET are usually processed the same day — a regulator may need a little longer, because every one is assembled and tested before it ships. Delivery is fully tracked with FedEx: 1–2 business days in Europe, 3–5 worldwide. Customs or import duties outside the EU are charged on arrival. Shipping policy · Returns
Warranty and lifetime support
The Advance Professional and Professional dual-stage regulators carry a warranty of up to 10 years; every other CO2Art product carries the standard 2-year manufacturer's warranty. All customers receive lifetime free online technical support. Warranty terms
Satisfaction guarantee
If you are not satisfied with the quality of a product within 30 days of purchase, we send a full refund or a replacement at no charge. Mechanical defects found during the first year are repaired, with any parts needed, at no cost to you. The guarantee